* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download UM1470
Flip-flop (electronics) wikipedia , lookup
Control system wikipedia , lookup
Power inverter wikipedia , lookup
Alternating current wikipedia , lookup
Printed circuit board wikipedia , lookup
Pulse-width modulation wikipedia , lookup
Stray voltage wikipedia , lookup
Variable-frequency drive wikipedia , lookup
Analog-to-digital converter wikipedia , lookup
Current source wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Mains electricity wikipedia , lookup
Voltage optimisation wikipedia , lookup
Power MOSFET wikipedia , lookup
Distribution management system wikipedia , lookup
Power electronics wikipedia , lookup
Integrating ADC wikipedia , lookup
Voltage regulator wikipedia , lookup
Two-port network wikipedia , lookup
Schmitt trigger wikipedia , lookup
Current mirror wikipedia , lookup
Opto-isolator wikipedia , lookup
UM1470 User manual STEVAL-ISA096V1 -12 V/150 mA adaptable buck-boost converter Introduction The purpose of this document is to describe the STEVAL-ISA096V1 switched mode power supply (SMPS) demonstration board. The STEVAL-ISA096V1 is a non-isolated SMPS designed in buck-boost topology capable of delivering up to 2 W output over a wide input voltage range, providing a cost-effective and space-saving solution. It also offers the user the possibility of adapting the circuit to their needs thanks to the availability of a free PCB area. The STEVAL-ISA096V1 SMPS generates a 12 V nominal output voltage. This board is based on VIPer™06XS - a monolithic converter integrating an 800 V avalanche rugged MOSFET and PWM controller in one package. This document contains a basic technical description of the demonstration board (schematic diagram, PCB details, and bill of material) as well as the most significant parameter measurements (load regulation, efficiency, standby behavior, EMI and thermal behavior data). Figure 1. May 2012 STEVAL-ISA096V1 demonstration board Doc ID 022241 Rev 1 1/19 www.st.com www.BDTIC.com/ST Contents UM1470 Contents 1 Main characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 Board connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 Board description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 5 2/19 3.1 Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.2 Description of the schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.3 Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.4 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.1 Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.2 Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.3 Load characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.4 EMI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.5 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Doc ID 022241 Rev 1 www.BDTIC.com/ST UM1470 List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. STEVAL-ISA096V1 demonstration board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Input/output connection of SMPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 STEVAL-ISA096V1 circuit schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 The PCB layout - top and bottom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Efficiency at 120 VAC and 230 VAC depending on the output current. . . . . . . . . . . . . . . . 11 Efficiency at full load (150 mA) over input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Standby depending on the input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 The 12 V output load characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 EMI measurement regarding EN55022 Class 2 - peak detector . . . . . . . . . . . . . . . . . . . . 15 EMI measurement regarding EN55022 Class 2 - AVG detector. . . . . . . . . . . . . . . . . . . . . 16 Thermal map of the board at 265 VAC on the input - left bottom side, right top side . . . . . 17 Thermal map of the board at 85 VAC on the input - left bottom side, right top side . . . . . . 17 Doc ID 022241 Rev 1 www.BDTIC.com/ST 3/19 Main characteristics 1 UM1470 Main characteristics The main characteristics of the SMPS are listed below: ● ● Input: – VIN: 85 ~ 264 Vrms – f: 45 ~ 66 Hz Output: – 4/19 -12 VDC ± 10%, 150 mA ● Standby < 30 mW at 264 VAC ● Short-circuit: protected ● PCB type and size: – FR4 – Single side 35 µm – SMPS size 19 x 39 mm, board size 38 x 61 mm ● Isolation: isolated 4 kV/8 mm ● EMI: according to EN55022 Class B Doc ID 022241 Rev 1 www.BDTIC.com/ST UM1470 2 Board connection Board connection The STEVAL-ISA096V1 demonstration board is shown in Figure 2, with input and output locations. Figure 2. Input/output connection of SMPS Doc ID 022241 Rev 1 www.BDTIC.com/ST 5/19 Board description UM1470 3 Board description 3.1 Schematic A schematic diagram of the buck-boost converter board based on the VIPer06XS is provided in Figure 3. 6/19 Doc ID 022241 Rev 1 www.BDTIC.com/ST ). $ . . $ # 6 M( , $ . # 6 2 .! # N& $ $ # $ 6$$ 6 $ $ #/-0 '.$ ,)2 .! # .! &" 6)0ER83 N& # , M( 2 2 344(, $ # # 6 $ 344(, $: 6 Doc ID 022241 Rev 1 www.BDTIC.com/ST !- /54 Figure 3. # .! 2 5 UM1470 Board description STEVAL-ISA096V1 circuit schematic 7/19 Board description 3.2 UM1470 Description of the schematic The input part of converter consists of an input single-wave rectifier, EMI/EMC filter and bulk capacitor. The input rectifier is based on two 1 A/1 kV general purpose diodes (D1, D2). The 2 kV blocking voltage is selected to increase robustness against input surge pulse. The EMI filter is based on a π filter (C10, C2, L1) and the possibility to place an input foil capacitor may also be an option. This capacitor is not mandatory in order to satisfy EMI limits (see Figure 9), but it can be used in case a wider margin of EMI limits is required. The input EMC filter is based on the inrush resistor R2 and bulk capacitors C10 and C2. The buck-boost converter itself uses a standard connection. The VIPer06XS (U1), containing an active switch and controller, is placed as the high side with floating reference. After turn-ON of the internal MOSFET the energy is stored in the inductor L3. After U1 is turned off the energy stored in the L3 is distributed to the output capacitor C5 via diode D4 and in capacitor C3 via diode D3. It can be expected that the voltage drop over capacitor C3 is almost the same as the voltage drop over output capacitor C5. The feedback loop performs constant voltage regulation and the output voltage is measured across C3 by a voltage divider (R1 and R3) connected to the FB pin of U1. 3.3 Layout The layout of the PCB is based on a one-sided FR4 with a 35 μm thickness and is shown in Figure 4. The size of the PCB dedicated for the SMPS itself is 39 mm x 19 mm while the size of the complete PCB is 61 x 38 mm; this extra space (area provided by through-hole connections) is intended to give the user the possibility of modifying certain board specifications. It is possible, for example, to apply an output linear regulator generating precisely 3.3 or 5 V or to realize different types of feedback loop to minimize load regulation. 8/19 Doc ID 022241 Rev 1 www.BDTIC.com/ST UM1470 Board description Figure 4. The PCB layout - top and bottom Doc ID 022241 Rev 1 www.BDTIC.com/ST 9/19 Board description 3.4 UM1470 Bill of materials Table 1. BOM Index Quantity 10/19 Ref. Value / generic part number Package / class 1 1 R1 27 kΩ / 1% / 0.1 W 0805 2 1 R2 22 Ω / 2 W / 5%/WW TH - wire wound 3 1 R3 10 kΩ / 1% / 0.1 W 0805 4 0 R4 N. A. 0805 5 0 R5 N. A. 0805 6 0 C1 N. A. 18 x 6 x RM 15 7 1 C2, C10 3.3 μF / 400 V R 10 x 13, RM 5 mm 8 1 C3, C4 1 μF / 25 V / X7R 1206 9 2 C5 47 μF / 50 V R 6.3 x 11 RM 2.5 mm 10 0 C6 N. A. 0805 11 1 C7, C8 1.5 nF / 50 V 0805 12 1 L1 1 mH / 80 mA 13 1 L3 1.5 mH/400 mA, HV 768 772 152 14 2 D1, D2 1N4007 MELF / SMA 15 2 D3, D4 STTH1L06A SMA 16 1 D5 17 1 DZ1 18 1 19 20 R 8 x 10, RM 5 mm 1N4148 SOD80 ZD / 15 V / 5% SOD80 U1 VIPer06XS SSO10 1 J1 Screw terminal 2 pos. RM 5 mm 1 J2 Screw terminal 3 pos. RM 5 mm Manufacturer Würth Elektronik STMicroelectronics™ STMicroelectronics Doc ID 022241 Rev 1 www.BDTIC.com/ST UM1470 Measurements 4 Measurements 4.1 Efficiency The output voltage efficiency depending on the output current of 12 V output is displayed in Figure 5. Figure 5. Efficiency at 120 VAC and 230 VAC depending on the output current Doc ID 022241 Rev 1 www.BDTIC.com/ST 11/19 Measurements UM1470 Figure 6 shows the efficiency of the SMPS at full load applied on the 12 V, depending on the different input voltage. A drop of efficiency at low input voltage is mainly caused by an increase in the losses in the input inrush resistor and EMI filter. Figure 6. 12/19 Efficiency at full load (150 mA) over input voltage range Doc ID 022241 Rev 1 www.BDTIC.com/ST UM1470 4.2 Measurements Standby The standby behavior of the board is displayed in Figure 7. This value is for any input voltage below 30 mW. The measured value could be partly reduced by using a higher value of resistors R1 and R3. The power loss over these resistors is about 4.5 mW. By using a higher value voltage divider (5 - 10 times) the standby losses drop by about several mW, but this action increases load regulation. Figure 7. Standby depending on the input voltage Doc ID 022241 Rev 1 www.BDTIC.com/ST 13/19 Measurements 4.3 UM1470 Load characteristics The load characteristics of a 12 V output are displayed in Figure 8. The output voltage is for any load and any input voltage within a ±10% tolerance. Figure 8. 14/19 The 12 V output load characteristics Doc ID 022241 Rev 1 www.BDTIC.com/ST UM1470 4.4 Measurements EMI The conductive EMI test of the demonstration board is displayed in Figure 9 and 10. The AVG detector is used in Figure 10, while the peak detector measurement can be seen below in Figure 9. Figure 9. EMI measurement regarding EN55022 Class 2 - peak detector Doc ID 022241 Rev 1 www.BDTIC.com/ST 15/19 Measurements UM1470 Figure 10. EMI measurement regarding EN55022 Class 2 - AVG detector 16/19 Doc ID 022241 Rev 1 www.BDTIC.com/ST UM1470 4.5 Measurements Temperature The thermal map at full load measured at 265 VAC and at 85 VAC is displayed in Figure 11 and Figure 12. The ambient temperature was 25 °C. Regarding the measurements visible below, it can be estimated that the temperature of the components is below AMR even at 85 °C of ambient temperature. This range can be extended by using a bigger Cu heatsink area connected to the drain of the VIPer06XS. Figure 11. Thermal map of the board at 265 VAC on the input - left bottom side, right top side Figure 12. Thermal map of the board at 85 VAC on the input - left bottom side, right top side Doc ID 022241 Rev 1 www.BDTIC.com/ST 17/19 Revision history 5 UM1470 Revision history Table 2. 18/19 Document revision history Date Revision 02-May-2012 1 Changes Initial release. Doc ID 022241 Rev 1 www.BDTIC.com/ST UM1470 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY TWO AUTHORIZED ST REPRESENTATIVES, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2012 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com Doc ID 022241 Rev 1 www.BDTIC.com/ST 19/19